Sash-balance.



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ini-N fi u FRANCOIS DUFRESNELOF ST. LAURENT, QUEBEC, CANADA.

SASI-I-BALANCE.

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Application filed June 11, 1915, Serial No. 33,613.

To all whom t may concern Be it known that I, FRANCOIS DUrRnsNE, a subject of the King of Great Britain, and residing at St. Laurent, in the Province of Quebec, Canada, have invented certain new and use-ful Improvements in Sash-Balances; and I do hereby declare that the following is a` full, clear, and exact description of the same.

rlhe invention relates to that type of sash balance in which the sashes are arranged to slide up and down and to be swung inwardly in a horizontal plane for cleaning purposes.

The object of the present invention is to improve the sash cord running devices in order to facilitate renewing or repairing of the sash cords.

lt has been proved in practice that the best method of securing easy running of the sashe's is to support each sash from balance Weights on both sides of the sash, but a great difficulty has been here encountered in view of the fact that when the sash is swung on its hinges, the sash cord attached to the free end of the sash must be either attached or manipulated in some other Way in order to permit the sash to be so opened. This invent-ion, therefore, includes means to facilitate the operation of opening the sash.

The 'invention will now be described in connection with the accompanying' drawings, in which the figure shows an inside view of the Window With the innermost sash swung inwardly and With part of the Window easing in section.

Referring to the drawings, 1 and 2 designate respectively the vertical sides of the Window casing Which diverge from the outside in order that the light entering the Window will be spread over a large area.

The side 1, preferably in one piece is provided with vertical slide grooves extending from top to bottom thereof. Each of the slide grooves is separated from its neighbor by the usual parting strips and have removable outer end strips 14 and 15 eX- tending` from top to bottomv of the slide grooves.

Each slide groove contains a sash separating strip 19 of sufficient Width to extend partly outside the groove. Thus each separating strip is Well guided in its vertical slide movement not only by the slide groove Specification of Letters Patent.

latented Apr. 2d, 1191*?.

Renewed March 21, 1917. Serial No. 156,299.

and parting strip, but by the outer end strip also.

24 and 25 are the sliding sashes secured respectively to the supporting strips 19 by the hinges 26.

In order that the Window may have a Well balanced appearance from the inside. that is to say, in order that the Windenv frame may be centrally positioned Within the opening of the Wall, it has been found very convenient to arrange for all of the Weights to move up and down at one side only of the window, this being the side 2 or in other Words, that side Opposite the supporting` strips. The sash compartment is indicated to the outside ot the side 1 by the numeral Attention is nou' called. to the drawings, Which clearly show the counterbalancing arrangement for the sash 25 and it vWill be noticed that there are a pair of sash cords 84E and for each sash and also a pair of counterbalance Weights 8G and 37 attached to the outer ends of these cords respectively. rThe cord 84 is connected to the supporting strip 19 of the sash Q5 and extends over a `pulley 38, suitably supported. across to a pulley and thence down the innermost compartment 32 Where it is attached to the Weight 36.

The pulley 39 is a double one, that is to say, tivo pulleys are arranged on the same spindle side by side and the cord runs over the other one of these pulleys and dovv'n the innermost compartment 32 Where 'it is attached to the vweight 37. Particular attention is drawn to the fact tha-t the weight 37 is disposed above the Weight 3G in the same compartment and loosely encircles the cord 31, thus permitting it to slide up and dovn on said cord. The inner end of the cord is connected to the free edge of the sash 25 in any suitable readily detachable manner, and as here shown. a recess 40 is cut in the said free edge 0f the sash and a groove 411 runs therefrom to the top of the sash while the end of the cord is provided .vith an ordinary sash cord hook e2, engaging the recess --lO vfliile the cord extends up iardly Within the groove L11. i

ln order to swing the sash 25 inwardly, on its hinges, the hinged strip is lirst thrown haelt indicated in the figure in order to open up the groove. The sash is then slid up until it is level with the strip 28 and its free edge is then pulled inwardly a short distance which, as Will readily be seen, has the effect o pulling on the cord 35 Without `alecting the cord 34. During this pull on the cord 35, the Weight 37 slides on the cord 34 independent of the Weight 36. The inner end of the cord 35 is noW detached from the free edge of the sash 25 and the latter can be fully opened.

lt is important to notice that when the cord 35 is released from the sash 25, the Weight 37 does not fall to the bottom of its compartment, but remains resting on the Weight 36, therefore when reclosing the sash, it is not necessary to have to climb to the top of the Window in order to grasp the end of the cord again. Furthermore, when the cord 35 is detached from the sash, the latter remains counterbalanced by exactly the same weight as in the closed position. Of course, it is possible to provide a single Weight in place of the two Weights 36 and 37 and attach the outer ends of both cords 34 and 35 to this single Weight, but this is not nearly such a desirable arrangement, as the cord 34 would be slackened when pulling up the Weight the short distance required to release the cord 35 from the sash.

What I claim is:

ln combination with a sash adapted to f slide up and down and pulleys suitably supported at the top of the Window casing, a pair of sash cords being` connected to each side of said sash, a Weight compartment arranged at one side only of the casing, a pair of separate Weights both arranged to slide in said compartment one above the other', the lowermost one of said Weights being connected to one of the sash cords, the uppermost weight being slidably arranged on this cord and connected to the other sash cord for the purpose herein set forth.

Signed at St. Laurent, Quebec, Canada, this 11th day of December, 1914.

FRANCGIS DUFRESNE. `Witnesses J. J. BASTIEN, M. PATERANDE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

